Windows Live not working after upgrading to Windows Live 2011

I upgraded app the application under Windows Live to 2011. All theinstallation goes well, without any failure. Hurray!!!!However now itsbehaving very strange. None of the applications are instantiated upon executingtheir executables.

While executing wlmail.exe, msnmsgr.exe,WindowsLiveWriter.exe, etc, I can see in the task manager that the executedprocess is started, but before getting interface of appication being executed,it is terminated.

The only application that run iswlstartup.exe.

Important note: Everything works fine for admin users, butnot for standard users on Lenovo Tinkpad T410i. On HP Pavillion dv4-1125nr, itworks fine for admin as well as standard users.